[SCM] systemtap: system-wide probe/trace tool branch, master, updated. release-1.3-214-g61f1a63

[fche at sourceware dot org]

This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "systemtap: system-wide probe/trace tool".

The branch, master has been updated
       via  61f1a63b261ab99923c07bf83eedcf76ae73f315 (commit)
       via  88637c31488f4987cc63c3f71263917dd98ca9cf (commit)
       via  d4393459f12944f65d509b71927770080df46237 (commit)
      from  fb72be5435594c99137073783ccdd016877a5989 (commit)

Those revisions listed above that are new to this repository have
not appeared on any other notification email; so we list those
revisions in full, below.

- Log -----------------------------------------------------------------
commit 61f1a63b261ab99923c07bf83eedcf76ae73f315
Author: Frank Ch. Eigler <fche@elastic.org>
Date:   Wed Oct 20 13:13:20 2010 -0400

    PR10745: automate kernel source_tree finding with stap -r /PATH/
    
    * tapsets.cxx (init_dw): Provide diagnostics when figuring out source_tree.
    * session.cxx (main): Ditto.  For stap -r /PATH/, heuristically infer
      source_tree too.

commit 88637c31488f4987cc63c3f71263917dd98ca9cf
Author: Frank Ch. Eigler <fche@elastic.org>
Date:   Wed Oct 20 11:51:34 2010 -0400

    PR10745: access hidden kernel tracepoints
    
    Including xfs_types.h unconditionally on installations with no
    kernel debuginfo would cause normal tracepoint processing to fail too.
    
    * tapsets.cxx (tracepoint_extra_decls): Include xfs_types.h
      only if we know the kernel source tree.

commit d4393459f12944f65d509b71927770080df46237
Author: Frank Ch. Eigler <fche@elastic.org>
Date:   Wed Oct 20 11:27:59 2010 -0400

    PR10745: access hidden kernel tracepoints
    
    A bunch of kernel tracepoints have been declared outside the conventional
    include/linux/trace/* hierarchy, and left in the source tree only.  By
    searching the source tree with some additional glob patterns, we can find
    them and generate debuginfo the usual way.  On Fedora/RHEL, this means
    looking through debuginfo to find the DW_AT_comp_dir (compilation source
    directory), which is something like /usr/src/debug/kernels/FOO/BAR/.
    
    Nearly all tracepoints appear now accessible under RHEL6/F13 era kernels:
    
    % ls -1 /sys/kernel/debug/tracing/events/*/*/id |
      cut -f8 -d/ | egrep -v 'sys_(enter|exit)' |
      while read tp
    do
      stap -L 'kernel.trace("'$tp'")' || echo no $tp
    done
    
    reports no "no"s.  Note that syscall tracepoints are treated specially
    in the kernel; stap sees only a single sys_enter / sys_exit pair, thus
    the egrep -v above.
    
    * session.h (kernel_source_tree): New field.
    * buildrun.cxx (compile_pass, make_tracequery): Add EXTRA_CFLAGS += -I....
      (make_tracequery): Squish repeated TRACE_INCLUDE_PATH defines.
    * tapsets.cxx (tracepoint_derived_probe ctor): Relax conventions
      on tracepoint header file name.
      (tracepoint_extra_headers): Renamed to ...
      (tracepoint_extra_decls): New function.  Include struct/type forward
      decls as needed.
      (emit_module_decls): Use new decl list style.
      (tracepoint_builder::init_dw): Search kernel source tree also for
      tracepoint headers.

-----------------------------------------------------------------------

Summary of changes:
 buildrun.cxx |   13 +++++--
 session.cxx  |   21 +++++++++++
 session.h    |    1 +
 tapsets.cxx  |  108 ++++++++++++++++++++++++++++++++++++++++++++++-----------
 4 files changed, 118 insertions(+), 25 deletions(-)


hooks/post-receive
--
systemtap: system-wide probe/trace tool